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ee809acd59
This changes DwarfContext to delegate to DwarfObject instead of having pure virtual methods. With this DwarfContextInMemory is replaced with an implementation of DwarfObject that is local to a .cpp file. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@308543 91177308-0d34-0410-b5e6-96231b3b80d8
52 lines
2.0 KiB
C++
52 lines
2.0 KiB
C++
//===- DWARFDataExtractor.h -------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_DEBUGINFO_DWARFDATAEXTRACTOR_H
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#define LLVM_DEBUGINFO_DWARFDATAEXTRACTOR_H
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#include "llvm/DebugInfo/DWARF/DWARFSection.h"
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#include "llvm/Support/DataExtractor.h"
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namespace llvm {
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class DWARFObject;
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/// A DataExtractor (typically for an in-memory copy of an object-file section)
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/// plus a relocation map for that section, if there is one.
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class DWARFDataExtractor : public DataExtractor {
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const DWARFObject *Obj = nullptr;
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const DWARFSection *Section = nullptr;
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public:
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/// Constructor for the normal case of extracting data from a DWARF section.
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/// The DWARFSection's lifetime must be at least as long as the extractor's.
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DWARFDataExtractor(const DWARFObject &Obj, const DWARFSection &Section,
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bool IsLittleEndian, uint8_t AddressSize)
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: DataExtractor(Section.Data, IsLittleEndian, AddressSize), Obj(&Obj),
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Section(&Section) {}
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/// Constructor for cases when there are no relocations.
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DWARFDataExtractor(StringRef Data, bool IsLittleEndian, uint8_t AddressSize)
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: DataExtractor(Data, IsLittleEndian, AddressSize) {}
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/// Extracts a value and applies a relocation to the result if
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/// one exists for the given offset.
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uint64_t getRelocatedValue(uint32_t Size, uint32_t *Off,
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uint64_t *SectionIndex = nullptr) const;
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/// Extracts an address-sized value and applies a relocation to the result if
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/// one exists for the given offset.
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uint64_t getRelocatedAddress(uint32_t *Off, uint64_t *SecIx = nullptr) const {
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return getRelocatedValue(getAddressSize(), Off, SecIx);
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}
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};
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} // end namespace llvm
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#endif // LLVM_DEBUGINFO_DWARFDATAEXTRACTOR_H
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